Home / 258,482.16-387,785.34-89,977.68

Finding the Fourth Proportional to 258,482.16, 387,785.34 and 89,977.68

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Solution

The fourth proportional to 258,482.16, 387,785.34 and 89,977.68 is: 134,988.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,482.16 : 387,785.34 = 89,977.68 : x
  2. Step 2: Convert to fraction form
    258,482.16/387,785.34 = 89,977.68/x
  3. Step 3: Cross multiply
    258,482.16x = 387,785.34 × 89,977.68
  4. Step 4: Simplify right side
    258,482.16x = 34,892,025,231.21
  5. Step 5: Solve for x
    x = 34,892,025,231.21/258,482.16
  6. Step 6: Final answer
    x = 134,988.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.